BAGHDAD, Iraq - Iraqi extremists in videotape aired today by Al-Jazeera television showed what they said was a Polish woman hostage held in Iraq and demanded that Poland remove all its troops from Iraq.

The group, which called itself the Abu Bakr al-Siddiq Fundamentalist Brigades, said the woman, who was not identified, works with U.S. troops in Iraq. They also demanded the release of all Iraqi female prisoners.

Interior Ministry spokesman Col. Adnan Abdul Rahman said the woman was a longtime Iraq resident with Iraqi citizenship and was believed to have been abducted Wednesday night from her home in Baghdad.

A middle-aged woman with gray hair and dressed in a pink polka-dotted blouse sat in front of two masked gunmen, one of whom was pointing a pistol at her head.

Al-Jazeera said the woman called on Polish troops to leave the country and for U.S. and Iraqi authorities to release all female detainees from the Abu Ghraib prison.

In Warsaw, a Polish Defense Ministry official said she apparently did not belong to any of the Polish military units. Polish television TVN24 reported that all Polish journalists in Iraq have been accounted for.

Ahmed al-Sheikh, Al-Jazeera's editor-in-chief, said the kidnappers did not mention a specific threat on the tape nor did they give a deadline for their demands to be met.

Poland commands some 6,000 troops from 15 nations - including some 2,400 from Poland - in the Babil, Karbala and Wasit provinces.

Late Wednesday, Al-Jazeera aired a video showing British aid worker Margaret Hassan, who again pleaded with Britain to withdraw its forces from Iraq even as some 800 British troops began deploying toward the Baghdad area. They were expected to relieve U.S. troops in the capital who are being preparing for a major assault on insurgent areas west and north of the capital.